Property, Plant and Equipment (Details) (USD $) In Millions, unless otherwise specified	Jun. 27, 2014	Sep. 27, 2013
Property, Plant and Equipment:
Accumulated depreciation	$ (2,838)	$ (2,811)
Property, plant and equipment, net	1,283	1,284
Land
Property, Plant and Equipment:
Property, plant and equipment	37	35
Buildings
Property, Plant and Equipment:
Property, plant and equipment	412	376
Subscriber systems
Property, Plant and Equipment:
Property, plant and equipment	2,313	2,414
Machinery and equipment
Property, Plant and Equipment:
Property, plant and equipment	1,269	1,203
Construction in progress
Property, Plant and Equipment:
Property, plant and equipment	$ 90	$ 67